Tool offsets
8.9 Contour approach and retraction (NORM, KONT, KONTC, KONTT)
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
8-33
Example of KONTC
The full circle is approached beginning at the circle center point. The direction and curvature
radius of the approach circle at the block end point are identical to the values of the next
circle. Infeed takes place in the Z direction in both approach/retraction blocks
simultaneously. The adjacent diagram shows the vertical projection of the path.
The associated NC program segment is as follows:
$TC_DP1[1.1]= 121 ;Milling tool
$TC_DP6[1.1]=10 ;Radius 10 mm
N10 G1 X0 Y0 Z60 G64 T1 D1
F10000
N20 G41 KONTC X70 Y0 Z0 ;Approach
N30 G2 I-70 ;Full circle
N40 G40 G1 X0 Y0 Z60 ;Retract
N50 M30
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